Stuffing-box.



L. GI

STUFFI X. urmomron rum) JULY 30,1910.

INVENTOR 100/5 67/;790

ATTORNEYS Patented Sept. 5,1911.

unrrnn STATES PATENT orruon.

LOUIS CIRAC, OF ELY, NEVADA.

STUFFING-BOX.

To all whom it may concern;

Be it known that I, Lou-rs GIRAC, a citizen of the United States, and aresident of Ely, in the county of White Pine and State of Nevada, haveinvented certain new and useful Improvements in Stuffing Boxes, of whichthe following is a specification.

This invention is an improvement in packing or stui'ling boxes for useon piston rods, valve rods, pump plungers or other similar deviceswherein packing is utilized to surround a rod or the like; and theinvention has for an object to provide a simple construction which canbe easily operated to compress the packing and secure a proper packingof the joint and by which lubricant may be supplied directly to thepacking through openings in the devices for compressing the packing; andthe invention consists in certain novel constructions, and combinationsof parts as will be more fully hereinatter described and claimed.

in the drawing Figure 1 is a vertical longitudinal section of theinvention as in use. Fig. 2 is a side view, partly in section, of thepressing nut in place on a piston rod. Fig. 8 is an elevation of theslotted end of the nut.

The boX A may be threaded at A for connection with the cylinder head B,or the said box may be made integral with the cylinder head as is wellunderstood by those skilled in the art. This box A when made separatefrom the cylinder head as shown, ordinarily has an angular portionadjacent to the cylinder head to receive a wrench. The outer end of thebox A is provided with a socket G whose bore is threaded at 0 adjacentto its outer end and is conical or tapering at its inner end at Cgradually reducing in size until the conical or tapered wall of thesocket communicates with the opening C through the box and in which therod D operates as shown in Fig. 1.

The nut E has an opening E to fit on the rod D and this nut is providedwith an angular portion E to receive a wrench and the body of the nut isthreaded at E to screw in the threaded portion 0 of the socket C and theinner end of the nut is sloped or tapered at E to cooperate with theconical seat 0 at the inner end of the socket C of the box.

A. socket F is formed in the inner end of the nut to receive the packingG and the said inner end of the nut forming the side wall of the socketF is slotted longitudinally at F to a point beyond the shoulder F atSpecification of Letters Patent.

Application filed July 30, 1910.

Patented Sept. 5, 1911..

Serial No. 574,704.

the inner end of the socket F and intersecting the counterbore H formedin the nut beyond the shoulder F as best shown in Figs. 1 and 2 of thedrawing. This counterbore facilitates the compression of the innerslotted end of the nut in securing the desired compression of thepacking toward the rod D while the shoulder F at the inner end of thesocket Eoperates to secure a compression of the packing in the directionof length of the rod D as the nut is tightened in its socket as will beunderstood from the drawing. Thus as before suggested, the chamber orcounter-bore H aids in securing the desired resilience of the innerslotted end of the nut and in furnishing the shoulder F which preventsthe packing passing back to the inner ends of the slots and thusclogging in a way the compression of the slotted portion.

The packing may preferably be in the form of rings as shown in Fig. land of any suitable material adapted for the purpose of packing a rod orthe like.

The angular portion E of the nut is adapted to receive an ordinarymonkey or other jaw wrench and I also provide itwith sockets E tocooperate with ,a spanner wrench.

An oil cup I connects with the box A and discharges lubricant to thesocket C at a point adjacent to the inner ends of the slots F of the nutE so the oil will be fed through the slots F directly to the packing Gin the operation of the invention.

It will be noticed that the invention pro vides for eflicientlubrication, convenient renewal of the packing and a ready adjustment ofthe parts whenever necessary or de sired.

I claim:

1. The combination of the boX having a rod opening and provided in itsouter end with a socket having its bore adjacent to said end threadedand the inner end of said socket being sloped or tapered, graduallyreducing toward the rod opening, an oil cup communicating with saidsocket adjacent to the sloped or tapered portion thereof and a nuthaving a rod opening and having at its end a sloped or tapered portioncorresponding to the sloped or tapered portion of the box socket andprovided in said end of the nut with a socket for packing and with ashoulder at the inner end of said socket and wit-h a counterbore beyondthe said shoulder, the said nut being provided with socket communicatingtherewith and a threaded portion screwing in the threaded portion of thebox socket, substantially as set forth.

2. The combination of a box having a rod opening and provided in itsouter end with a socket communicating with said rod opening and havingits bore threaded at its outer end and sloped or tapered at its innerend and a nut conformed to and cooperating with said box, substantiallyas set forth.

3. A box having a rod opening and a sloped or tapered at its inner end,a member cooperating with said box and having a rod opening and havingits inner end slotted and socketed for the reception of packing, thesaid inner end being adapted to contact with and be compressed by thesloped or tapered inner end of the box, substantially as set forth.

4. A stufiing box comprising a box proper having a rod opening andprovided in its outer end with a socket communicating with said openingand having its inner end sloped or tapered and a member cooperating withsaid box proper and having its end conformed to the sloped or taperedportion of the box socket and adapted to be compressed by contacttherewith, said end being slotted longitudinally and socketed for thereception of packing and said member being provided with a shoulder atthe inner end of its socket and with a counterbore beyond said shoulder,substantially as set forth.

5. A box having a rod opening and a socket communicating therewith andsloped or tapering at its inner end and provided adjacent to said slopedend with an oil supplying device and a member fitting the socket of thebox and having its inner end sloped or tapered to conform to thecorresponding portion thereof, said sloped end of the member beingsocketed for the reception of packing and slotted longitudinally Wherebyit may be compressed and whereby oil may be passed to packing in thesocket of said member, substantially as set forth.

6. In a stufling box, substantially as described, a nut like memberslotted longitudinally from its end and having said slotted end slopedor tapered and provided with a socket in said sloped end with anoutwardly facing shoulder at the inner end of said socket and adapted toform an abutment for packing and with a counterborc or recess in rear ofsaid shoulder, substantially as and for the purposes set forth.

LOUIS OIRAC.

Witnesses:

GRovER O. TILFORD, R. P. MoKERNAN.

(lopies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. O.

